<script setup>
import { User, Lock } from "@element-plus/icons-vue"
import { ElMessage } from "element-plus"
import { ref, watch } from "vue"
import { userRegisterService, userLoginService } from "@mars/api/user"
import { useUserStore } from "@mars/store"
import { useRouter } from "vue-router"

const isRegister = ref(false)
const form = ref()

// 注册
const formModel = ref({
  userAccount: "",
  password: "",
  rePassword: ""
})

// 整个表单的校验规则
// 1. 非空校验 required: true      message消息提示，  trigger触发校验的时机 blur change
// 2. 长度校验 min:xx, max: xx
// 3. 正则校验 pattern: 正则规则    \S 非空字符
// 4. 自定义校验 => 自己写逻辑校验 (校验函数)
//    validator: (rule, value, callback)
//    (1) rule  当前校验规则相关的信息
//    (2) value 所校验的表单元素目前的表单值
//    (3) callback 无论成功还是失败，都需要 callback 回调
//        - callback() 校验成功
//        - callback(new Error(错误信息)) 校验失败
const rules = {
  userAccount: [
    { required: true, message: "请输入用户名", trigger: "blur" },
    { min: 4, max: 15, message: "用户名必须为4-15位的字符", trigger: "blur" }
  ],
  password: [
    { required: true, message: "请输入密码", trigger: "blur" },
    { pattern: /^\S{5,15}$/, message: "密码必须为5-15位非空字符", trigger: "blur" }
  ],
    rePassword: [
    { required: true, message: "请输入密码", trigger: "blur" },
    { pattern: /^\S{5,15}$/, message: "密码必须为5-15位非空字符", trigger: "blur" },
    {
      validator: (rule, value, callback) => {
        // 判断value 和 当前form 中收集的 password 是否一致
        if (value !== formModel.value.password) {
          callback(new Error("两次输入密码不一致"))
        } else {
          callback() // 就算校验成功，也需要callback
        }
      },
      trigger: "blur"
    }
  ]
}

const register = async () => {
  // 注册成功之前，先进行校验，校验成功 → 请求，校验失败 → 自动提示
  await form.value.validate()
  await userRegisterService(formModel.value)
  ElMessage.success("注册成功")

  isRegister.value = false
}

const userStore = useUserStore()
const router = useRouter()
const login = async () => {
  await form.value.validate()
  const res = await userLoginService(formModel.value)
  // userStore.setToken(res.data.token)
  userStore.setToken("Bearer eyJhbGcioiJIUzI1NiIsInR5cCI6IkpXVCJ9.")
  ElMessage.success("登录成功")
  await router.push("/home")

  // const res = userLoginService(formModel.value)
  // if (res.userAccount === 'admin' && res.password === '123456') {
  //   userStore.setToken('Bearer eyJhbGcioiJIUzI1NiIsInR5cCI6IkpXVCJ9.')
  //   ElMessage.success('登录成功')
  //   router.push('/home')
  // } else {
  //   ElMessage.error("用户名或密码错误，请重试")
  // }

}

// 切换的时候，重置表单内容
watch(isRegister, () => {
  formModel.value = {
    userAccount: "",
    password: "",
    rePassword: ""
  }
})
document.body.onkeydown = (event) => {
  if (event.key === "Enter") {
    login()
  }
}
</script>

<template>
  <!--
    1. 结构相关
      el-row表示一行，一行分成24份
       el-col表示列
       (1) :span="12"  代表在一行中，占12份 (50%)
       (2) :span="6"   表示在一行中，占6份  (25%)
       (3) :offset="3" 代表在一行中，左侧margin份数

       el-form 整个表单组件
       el-form-item 表单的一行 （一个表单域）
       el-input 表单元素（输入框）
    2. 校验相关
       (1) el-form => :model="ruleForm"      绑定的整个form的数据对象 { xxx, xxx, xxx }
       (2) el-form => :rules="rules"         绑定的整个rules规则对象  { xxx, xxx, xxx }
       (3) 表单元素 => v-model="ruleForm.xxx" 给表单元素，绑定form的子属性
       (4) el-form-item => prop配置生效的是哪个校验规则 (和rules中的字段要对应)
  -->
  <el-row class="login-page">
    <el-col :span="15" class="bg"></el-col>
    <el-col :span="5" :offset="2" class="form">
      <el-form
        :model="formModel"
        :rules="rules"
        ref="form"
        size="large"
        autocomplete="off"
        v-if="isRegister">
        <el-form-item>
          <h1> 注册 </h1>
        </el-form-item>
        <el-form-item prop="userAccount">
          <el-input v-model="formModel.userAccount" :prefix-icon="User" placeholder="请输入用户名"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            v-model="formModel.password"
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入密码"
          ></el-input>
        </el-form-item>
        <el-form-item prop="rePassword">
          <el-input
            v-model="formModel.rePassword"
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入再次密码"
          ></el-input>
        </el-form-item>
        <el-form-item>
          <el-button @click="register" class="button" type="primary" auto-insert-space>
            注册
          </el-button>
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = false">
            ← 返回
          </el-link>
        </el-form-item>
      </el-form>
      <el-form
        :model="formModel"
        ref="form"
        size="large"
        autocomplete="off"
        v-else>
        <el-form-item>
          <h1>登录</h1>
        </el-form-item>
        <el-form-item prop="userAccount">
          <el-input
            v-model="formModel.userAccount"
            :prefix-icon="User" placeholder="请输入用户名"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            v-model="formModel.password"
            name="password"
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入密码"
          ></el-input>
        </el-form-item>
        <el-form-item class="flex">
          <div class="flex">
            <el-checkbox>记住我</el-checkbox>
            <el-link type="primary" :underline="false">忘记密码？</el-link>
          </div>
        </el-form-item>
        <el-form-item>
          <el-button @click="login" class="button" type="primary" auto-insert-space
          >登录
          </el-button
          >
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = true">
            注册 →
          </el-link>
        </el-form-item>
      </el-form>
    </el-col>
  </el-row>
</template>

<style lang="scss" scoped>
.login-page {
  height: 100vh;
  background-color: #fff;

  .bg {
    background: url('/img/sjsw.png') no-repeat center / cover;
    border-radius: 0 20px 20px 0;
  }

  .form {
    display: flex;
    flex-direction: column;
    justify-content: center;
    user-select: none;

    .title {
      margin: 0 auto;
    }

    .button {
      width: 100%;
    }

    .flex {
      width: 100%;
      display: flex;
      justify-content: space-between;
    }
  }
}
</style>
